Sherlock S2 E2 "The Hounds of Baskerville"
Excellent piece of work. A great mystery with some well done homages to Doyle's original story.
Rome S1 E9-10
Only two episodes left in this season, and not only is the tension thick enough to cut, but it's also gone a tad sleazy, if not to Game of Thrones levels. And damn, Pullo, time and place...